There are currently approximately 1.2 billion smokers worldwide, causing nearly ( ) deaths from smoking each year.
A. 500,000 cases
B. 2 million cases
C, 3 million cases
D. 5 million cases
Answer: D, 5 million cases
Problem Analysis: There are currently about 1.2 billion smokers in the world, causing nearly 5 million deaths due to smoking every year.